Method in the manufacture of catalogues, pamphlets, or the like with slanting opening edges



1933- J. 5. F. BERGENDAHL 1,932,153

METHOD IN THE MANUFACTURE OF CATALOGUES, PAMPHLETS,

OR THE L WITH NTING OPENING EDGES ed Ma BY MWW A TTORNEYS.

Patented Oct. 24, 1933 LOGUES, PAMLPHLETS, OR THE LIKE WITH SLANTINGOPENING EDGES Josef F. 'Bergendahl, Gotteriborg, *Sweden ApplicationMarch 23, 1933, Serial No. 662,309,

, andimSwedenAugustfi, 1931 v '-'-This invention relates to themanufacture of such books as catalogues, pamphlets or the "like whichare provided with'aslantingopening edge for the ip'mip'oses tofacilitate the-finding of the 5 proper pages, so called lightning index.

The main object of this invention is a cheap and simple method resultingin a product of good quality and attractive appearance.

It has gradually become practice to provide f0 price lists, catalogues,books of reference, timetables and the like with an index, consisting ofblack or coloured strips on the opening edge of the book, each stripextending so far over the edge of the leaves of the book that the reader18 only needs to insert a finger-nail between two such coloured stripsat the point where they adjoin in order to turn up the page desired atonce. In order to obtain such lightning indexes the opening edge of thebook may be cut aslant, so 20 that the reference strips at the edge ofthe pages become more extensive and visible and 'are grasped moreeasily.

Books with a sloping opening edge for the said purpose are known, butthe methods for the manufacture thereof are affected with suchdisadvantages, that such books have become tooexpensive. By thisinvention books with a sloping opening edge will be produced quite ascheaply as books with square edges of the usual kind, and

the external appearance of the book will in'no means differ from that ofan ordinary book with sloping edge.

Two somewhat different methods may be used. Either the back of the bookis left intact while a 3'5'='certain portion of the paper at the openingedge is undercut to form the inclined reference edge, or all the leavesof the book maintain their full width, but the leaves are mutuallydisplaced, spe-,- cial arrangements being made to ensure the usual 40'square shape of the back.

In the accompanying drawing both methods are illustrated, whereby Figure1 shows the first stage of the process in accordance with thefirst-mentioned embodiment {of this invention;

Figure 2 shows the second stage of the same process;

Figures 3 and 4 show in two difierent stages of manufacture amodification of the aforesaid process;

Figure 5 shows a cross-section of a book manufactured by the saidprocess.

The process shown in Figures 1-3 is carried out in the following manner.The leaves 1 of the in- Itended book are stacked or piled on each otherin the usual 'mannersoas'to make a block and are bound together adjacent'to the back edge 3 through some kind offasteningmeansz; Thereupon theblock is placed on a table orflat support 9 close to the roundedstraight edge '7 and 1 held tight against the surface of the table bymeans of some clamping means 6 or the like, so that the major portion ofthe block with the back edge 3 lies free outside the edge 7 of thetable.

This rear part of the block is gripped by jaws 4 and 5 i is bentdownwards round the said rounded edge 7, as shown in Fig. 2. The rearpart instead of being freely hanging as illustrated in Figures 1 and 2may be supported by a portion 90 of the table as shown in Figures 3 and4, which is hinged to the stationary table 9 so that it. can be foldeddown. In this case the upper jaw 4 must be secured to the foldingportion 90 so as to follow the movements thereof The clamping means 6must yield somewhat dash-dotted line in Figures 2 and 4 is cut away.

In order to ensure that the block will be cut entirely through, thetable 9 is provided with a groove 10 into which the knife 11 may enter.This groove is approximately parallel to the straight edge '7 of thetable, and the knife cuts through the block along a line practicallyparallel with the straight edge.

Having been cut, the block is unfastened and removed from the table andstretched out; whereby the free edge 12 in Figure 5 will have a slopebut with an opposite angle to the sloping edge 5 in Figure 2 The bookwhen completed may be provided with a cover or binding 21 in the usualmanner as shown in Figure 5. As shown in Figure 5, the block 1 of thecompleted book is reversed from the position shown in Figures 1 and 2,and the reference or index edge is at 12.

The angle to which the block gets bent in Figures 2 and 4; depends onthe sloping angle desired on the completed book, so that for a steeperslope of the edge 12 the block is to be bent less than for a weakerslant.

This described embodiment of the improved method is disadvantageous inso far as a comparatively large amount of material is cut away, viz. allthatpart of the block outside the knife Ill 11 (Figure 2). On the otherhand it must be looked upon as an advantage that the back 3 of the bookremains square and therefore exhibits the ordinary appearance of theback of a book.

What I claim is:

1. The manufacture of books, pamphlets or the like provided with asloping reference or index edge, which consists in stacking leaves on aflat support provided with a straight edge and with a part of the stackprojecting beyond the straight edge, bending the projecting part of thestack over the straight edge of the support to slope the free edge ofthe stack on the support during the bending of the stack, and cuttingthrough the part of the stack imposed 'on the support along a lineparallel to the straight edge.

2. The manufacture of books, pamphlets or the like provided with asloping reference or index edge, which consists in stacking leaves on aflat support provided with a straight edge and with a part of the stackprojecting beyond the straight edge, clamping together theleaves-adjacent to the free edge of projecting part of the stack,bending the projecting part of the stack over the straight edge of thesupport to slope the free edge of the stack on the support, and cuttingthrough the stack part imposed on the support along a line parallel tothe straight edge of the support. l

3. The manufacture of books, pamphlets or the like provided with asloping reference or index edge, which consists in stacking leaves on aflat support provided with a straight edge and with a part of the stackprojecting beyond the straight edge, clamping together the leavesadjacent to the free edge of the projecting part of the stack, pressingthe imposed part of the stack onto the support with comparatively lightpressure to permit relative movement of the leaves during bendingof thestack, bending the stack over the straight edge of the support to slopethe free edge of the stack on the support, cutting through the stackpart imposed on the support along a line parallel to the straightedge ofthe support, and binding the leaves together at the

